
<TABLE> <S> <C>

<PAGE>

<ARTICLE> 5
<LEGEND>
This schedule contains summary financial information extracted from the
Consolidated Financial Statements as of July 31, 1997 and is qualified in its
entirety by reference to such financial statements.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1000
       
<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   YEAR                   YEAR                   YEAR
<FISCAL-YEAR-END>                          JUL-31-1997             JUL-31-1996             JUL-31-1995
<PERIOD-START>                             AUG-01-1996             AUG-01-1995             AUG-01-1994
<PERIOD-END>                               JUL-31-1997             JUL-31-1996             JUL-31-1995
<CASH>                                           9,017                  16,097                   2,210
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                  113,927                  95,096                  34,274
<ALLOWANCES>                                     4,665                   2,660                   1,553
<INVENTORY>                                    120,974                  90,618                  35,377
<CURRENT-ASSETS>                               247,545                 208,456                  74,341
<PP&E>                                         158,146                 112,419                  45,791
<DEPRECIATION>                                  30,578                  22,900                  15,644
<TOTAL-ASSETS>                                 429,499                 320,105                 118,976
<CURRENT-LIABILITIES>                           85,520                  74,366                  30,870
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                           188                     181                      98
<OTHER-SE>                                     204,937                 165,276                  31,767
<TOTAL-LIABILITY-AND-EQUITY>                   429,499                 320,105                 118,976
<SALES>                                        516,996                 357,352                 188,941
<TOTAL-REVENUES>                               516,996                 357,352                 188,941
<CGS>                                          362,060                 245,533                 125,777
<TOTAL-COSTS>                                  454,394                 325,825                 159,328
<OTHER-EXPENSES>                                  (58)                     271                     (5)
<LOSS-PROVISION>                                     0                       0                       0
<INTEREST-EXPENSE>                               5,338                   5,362                   5,111
<INCOME-PRETAX>                                 57,322                  25,894                  24,507
<INCOME-TAX>                                    21,287                  10,013                   9,794
<INCOME-CONTINUING>                             36,035                  15,881                  14,713
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                     596                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                    36,035                  15,285                  14,713
<EPS-PRIMARY>                                     1.31                    0.64                    0.67
<EPS-DILUTED>                                     1.17                    0.55                    0.57
        

</TABLE>
